There are 88 officially recognized constellations in the entire celestial sphere, not just the Northern and Southern Hemispheres. The idea of dividing them into "northern" and "southern" constellations is not a standard classification.

Here's why:

* Constellations are not strictly divided by hemisphere: Constellations are simply patterns of stars that are visible from Earth, and these patterns can be seen from both hemispheres, depending on the time of year.

* The celestial sphere is a single entity: The sky is a continuous sphere, and the division between the Northern and Southern Hemispheres is artificial.

Instead of thinking about "northern" and "southern" constellations, it's more useful to consider the constellations visible from a particular location at a specific time.

Here are some ways to think about constellations:

* By hemisphere: You could talk about constellations primarily visible from the Northern Hemisphere (like Ursa Major) or the Southern Hemisphere (like Crux).

* By season: Different constellations are visible at different times of the year.

* By prominence: Some constellations are more famous and easily recognizable (like Orion) than others.

To learn more about specific constellations, you can find resources like star charts, planetarium websites, or astronomy books.